HESI A2 Physics Exam 2025 – Verified
Questions and Correct Answers |
100% Success
Question 1
What is the acceleration of an object in free fall near Earth's surface, ignoring air resistance?
A. 0 m/s²
B. 9.8 m/s²
C. 4.9 m/s²
D. 19.6 m/s²
B. 9.8 m/s²
Rationale: The acceleration due to gravity near Earth's surface is approximately 9.8 m/s², acting
downward on objects in free fall, assuming no air resistance. This is a fundamental constant in
motion problems. Option A implies no acceleration, C is half the correct value, and D is double,
making B the standard value per HESI A2 physics standards.
Question 2
A car travels 60 meters in 5 seconds. What is its average speed?
A. 5 m/s
B. 12 m/s
C. 25 m/s
D. 300 m/s
B. 12 m/s
Rationale: Average speed is calculated as total distance divided by total time: 60 m / 5 s = 12
m/s. HESI A2 tests basic kinematics. Option A uses incorrect division, C misinterprets the
formula, and D multiplies instead of divides.
Question 3
What is the unit of force in the SI system?
A. Joule
B. Watt
,C. Newton
D. Pascal
C. Newton
Rationale: A newton (N) is the SI unit of force, defined as kg·m/s². Joules (A) measure energy,
watts (B) measure power, and pascals (D) measure pressure. HESI A2 emphasizes SI unit
knowledge for force-related problems.
Question 4
Which law states that an object at rest stays at rest unless acted upon by a net force?
A. Newton’s Second Law
B. Newton’s First Law
C. Newton’s Third Law
D. Law of Universal Gravitation
B. Newton’s First Law
Rationale: Newton’s First Law, or the law of inertia, states that objects maintain their state of
motion unless a net external force acts. The Second Law (A) relates force to acceleration, the
Third Law (C) involves action-reaction pairs, and Gravitation (D) describes gravitational
attraction. HESI A2 tests Newton’s laws.
Question 5
What is the kinetic energy of a 2 kg object moving at 4 m/s?
A. 8 J
B. 16 J
C. 32 J
D. 64 J
B. 16 J
Rationale: Kinetic energy is calculated as KE = ½mv². For m = 2 kg and v = 4 m/s: KE = ½ × 2
× 4² = ½ × 2 × 16 = 16 J. Option A forgets the square, C doubles the result, and D squares
incorrectly. HESI A2 tests energy calculations.
Question 6
A 10 N force is applied to a 5 kg mass. What is the acceleration?
, A. 0.5 m/s²
B. 2 m/s²
C. 5 m/s²
D. 50 m/s²
B. 2 m/s²
Rationale: Newton’s Second Law states F = ma. Solving for acceleration: a = F/m = 10 N / 5 kg
= 2 m/s². Option A divides incorrectly, C uses mass alone, and D multiplies. HESI A2 tests force
and motion relationships.
Question 7
What is the primary source of energy for Earth’s climate system?
A. Geothermal heat
B. Solar radiation
C. Tidal forces
D. Nuclear fusion
B. Solar radiation
Rationale: Solar radiation drives Earth’s climate by heating the atmosphere and surface,
powering weather systems. Geothermal (A) and tidal (C) contribute minimally, and nuclear
fusion (D) occurs in the sun, not directly on Earth. HESI A2 tests energy sources.
Question 8
What is the pressure exerted by a 200 N force over a 0.5 m² area?
A. 100 Pa
B. 400 Pa
C. 800 Pa
D. 1000 Pa
B. 400 Pa
Rationale: Pressure is force per unit area: P = F/A = 200 N / 0.5 m² = 400 Pa. Option A halves
the force, C doubles the result, and D miscalculates. HESI A2 tests fluid dynamics principles like
pressure.
Question 9
Which type of energy is stored in a stretched spring?
Questions and Correct Answers |
100% Success
Question 1
What is the acceleration of an object in free fall near Earth's surface, ignoring air resistance?
A. 0 m/s²
B. 9.8 m/s²
C. 4.9 m/s²
D. 19.6 m/s²
B. 9.8 m/s²
Rationale: The acceleration due to gravity near Earth's surface is approximately 9.8 m/s², acting
downward on objects in free fall, assuming no air resistance. This is a fundamental constant in
motion problems. Option A implies no acceleration, C is half the correct value, and D is double,
making B the standard value per HESI A2 physics standards.
Question 2
A car travels 60 meters in 5 seconds. What is its average speed?
A. 5 m/s
B. 12 m/s
C. 25 m/s
D. 300 m/s
B. 12 m/s
Rationale: Average speed is calculated as total distance divided by total time: 60 m / 5 s = 12
m/s. HESI A2 tests basic kinematics. Option A uses incorrect division, C misinterprets the
formula, and D multiplies instead of divides.
Question 3
What is the unit of force in the SI system?
A. Joule
B. Watt
,C. Newton
D. Pascal
C. Newton
Rationale: A newton (N) is the SI unit of force, defined as kg·m/s². Joules (A) measure energy,
watts (B) measure power, and pascals (D) measure pressure. HESI A2 emphasizes SI unit
knowledge for force-related problems.
Question 4
Which law states that an object at rest stays at rest unless acted upon by a net force?
A. Newton’s Second Law
B. Newton’s First Law
C. Newton’s Third Law
D. Law of Universal Gravitation
B. Newton’s First Law
Rationale: Newton’s First Law, or the law of inertia, states that objects maintain their state of
motion unless a net external force acts. The Second Law (A) relates force to acceleration, the
Third Law (C) involves action-reaction pairs, and Gravitation (D) describes gravitational
attraction. HESI A2 tests Newton’s laws.
Question 5
What is the kinetic energy of a 2 kg object moving at 4 m/s?
A. 8 J
B. 16 J
C. 32 J
D. 64 J
B. 16 J
Rationale: Kinetic energy is calculated as KE = ½mv². For m = 2 kg and v = 4 m/s: KE = ½ × 2
× 4² = ½ × 2 × 16 = 16 J. Option A forgets the square, C doubles the result, and D squares
incorrectly. HESI A2 tests energy calculations.
Question 6
A 10 N force is applied to a 5 kg mass. What is the acceleration?
, A. 0.5 m/s²
B. 2 m/s²
C. 5 m/s²
D. 50 m/s²
B. 2 m/s²
Rationale: Newton’s Second Law states F = ma. Solving for acceleration: a = F/m = 10 N / 5 kg
= 2 m/s². Option A divides incorrectly, C uses mass alone, and D multiplies. HESI A2 tests force
and motion relationships.
Question 7
What is the primary source of energy for Earth’s climate system?
A. Geothermal heat
B. Solar radiation
C. Tidal forces
D. Nuclear fusion
B. Solar radiation
Rationale: Solar radiation drives Earth’s climate by heating the atmosphere and surface,
powering weather systems. Geothermal (A) and tidal (C) contribute minimally, and nuclear
fusion (D) occurs in the sun, not directly on Earth. HESI A2 tests energy sources.
Question 8
What is the pressure exerted by a 200 N force over a 0.5 m² area?
A. 100 Pa
B. 400 Pa
C. 800 Pa
D. 1000 Pa
B. 400 Pa
Rationale: Pressure is force per unit area: P = F/A = 200 N / 0.5 m² = 400 Pa. Option A halves
the force, C doubles the result, and D miscalculates. HESI A2 tests fluid dynamics principles like
pressure.
Question 9
Which type of energy is stored in a stretched spring?
